检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

乙酰天麻素治疗孕期偏头痛患者的临床研究

中国临床药理学杂志 2019年第10期35卷 960-962页

作者：吴春丽时宝林于忠娟柴峰张跃其刘刚张君潍坊市人民医院产一科山东潍坊261000 潍坊市人民医院神经内科山东潍坊261000 潍坊市第六人民医院内科山东潍坊261021 首都医科大学宣武医院神经内科北京1000535 千佛山医院神经内科山东济南250014

目的观察乙酰天麻素对孕期偏头痛患者的临床疗效及安全性。方法将1.1.妊娠1.4周偏头痛患者随机分为对照组55例和试验组56例,选取同时期妊娠1.4周健康体检者60例为正常组。对照组给予对乙酰氨基酚片,初始量为每次500 mg,每日3次;试验... 详细信息

目的观察乙酰天麻素对孕期偏头痛患者的临床疗效及安全性。方法将1.1.妊娠1.4周偏头痛患者随机分为对照组55例和试验组56例,选取同时期妊娠1.4周健康体检者60例为正常组。对照组给予对乙酰氨基酚片,初始量为每次500 mg,每日3次;试验组在对照组的基础上给予乙酰天麻素片,每次1.0 mg,每日3次,每次发作至少连续口服3 d。记录试验组和对照组妊娠1.4周时就诊及产后4周的疼痛评分(数字分级法)、近1.月发作次数、持续时间及焦虑指数;在分娩后4周对各组进行随访。结果治疗后,试验组疼痛评分、近1.月头痛发作次数、持续时间、焦虑指数分别为(3. 6±1. 0)分,(3. 5±1. 2)次,(1.. 8±6. 7) h,32. 1.5. 1.对照组分别为(4. 3±1. 3)分,(5. 9±1. 9)次,(1.. 1.8. 2) h,38. 8±7. 9,差异均有统计学意义(均P 0. 05)。结论乙酰天麻素可改善孕期偏头疼患者症状,并对孕妇及胎儿具有良好的安全性,具有潜在的临床应用价值。

关键词：偏头痛乙酰天麻素妊娠胎儿

在线全文

学校读者我要写书评

暂无评论

海南省野生蠓虫西藏环状病毒的研究

中国媒介生物学及控制杂志 2021年第4期32卷 415-421页

作者：王琴燕付士红孙定炜许秀燕吴群曾林海李善干何英李樊聂凯许松涛殷启凯王环宇鲁晓晴梁国栋青岛大学公共卫生学院山东青岛266071 中国疾病预防控制中心病毒病预防控制所传染病预防控制国家重点实验室北京102206 海南省疾病预防控制中心海南海口570203

目的调查海南省琼中县吸血昆虫及其携带病毒的种类以及流行情况。方法201.年8月在当地吸血昆虫孳生环境(羊圈、猪圈)中,使用“功夫小帅”牌紫外诱蚊灯进行标本采集并使用干冰运输到实验室。采用病毒学和分子生物学方法分离病毒并对病毒... 详细信息

目的调查海南省琼中县吸血昆虫及其携带病毒的种类以及流行情况。方法201.年8月在当地吸血昆虫孳生环境(羊圈、猪圈)中,使用“功夫小帅”牌紫外诱蚊灯进行标本采集并使用干冰运输到实验室。采用病毒学和分子生物学方法分离病毒并对病毒分离物进行鉴定。结果共采集到蚊虫3属34只(其中库蚊26只、按蚊1.和骚扰阿蚊7只)和蠓虫(待鉴定)1.50只。从采集的蠓虫标本中分离到1.可以引起白纹伊蚊C6/36细胞病变的病毒分离株(HNQZ1.27),该病毒不引起金黄地鼠肾细胞(BHK-21.病变。经病毒基因扩增和核苷酸序列测定与分析,结果显示HNQZ1.27为1.个基因节段的环状病毒属病毒,该病毒基因编码区核苷酸(氨基酸)与环状病毒属中的西藏环状病毒(TIBOV)同源性为79.4%~98.7%(94.6%~1.0%),而与TIBOV以外的其他环状病毒同源性在1.2%~78.1.。病毒基因组系统进化分析表明,HNQZ1.27病毒与我国此前在西藏地区采集的圆斑按蚊中分离的TIBOV XZ0906及我国在三带喙库蚊、致倦库蚊和多种蠓虫中分离的TIBOV处于共同进化分支。结论海南省蠓虫分离的HNQZ1.27病毒为TIBOV,这是首次从海南省自然界采集的蠓虫标本中分离到TIBOV。

关键词：环状病毒西藏环状病毒蠓虫海南省

Evidence for the decays of ∧_c^+→∑^+η and ∑^+η’

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第8期43卷 15-23页

作者： M.Ablikim F.F.An Q.An Y.Bai Y.Ban H.Cai X.Cai G.F.Cao J.F.Chang G.Chen H.S.Chen J.C.Chen M.L.Chen P.L.Chen S.J.Chen Y.B.Chen W.Cheng H.LDai J.P.Dai Z.Y.Deng Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du P.F.Duan J.Z.Fan J.Fang S.S.Fang Y.Fang C.Q.Feng C.D.Fu Y.Fu Q.Gao X.L.Gao Y.Gao Y.G.Gao Z.Gao L.Gong W.X.Gong L.M.Gu M.H.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo S.Han X.Q.Hao K.L.He Y.K.Heng Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang Q.Ji Q.P.Ji X.B.Ji X.L.Ji X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin X.S.Kang B.C.Ke C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li Lei Li P.L.Li P.R.Li Q.Y.Li T.Li W.D.Li W.G.Li X.L.Li X.N. Li X.Q.Li Z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao C.X.Lin D.X.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.L.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Liu K.Y.Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.lu J.D.lu J.G.lu Y.lu Y.P.lu C.L.luo M.X.luo T.luo X.L.luo X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma Y.J.Mao Z.P.Mao Z.X.Meng J.Min T.J.Min X.H.Mo Y.J.Mo Z.Ning S.L.Niu S.L.Olsen Q.Ouyang Y.Pan H.P.Peng J.L.Ping R.G.Ping H.R.qi M.qi T.Y.qi S.qian C.F.qiao N.qin Z.H.qin J.F.qiu S.Q.Qu G.Rong W.Shan X.Y.Shan M.Shao C.P. Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi J.J.Song X.Y.Song G.X.Sun J.F.Sun L.Sun S.S.Sun X.H.Sun Y.J.Sun Y.K.Sun Y.Z.Sun Z.J.Sun Z.T.Sun Y.T.Tan C.J.Tang G.Y.Tang X.Tang B.Wang B.L.Wang C.W.Wang D.Y.Wang Dan Wang K.Wang L.L.Wang L.S.Wang M.Wang Meng Wang P.Wang P.L.Wang W.P.Wang X.F.Wang Y.Wang Y.F.Wang Z.Wang Z.G.Wang Z.Y.Wang Zongyuan Wang D.H.Wei S.P.Wen L.H.wu L.J.wu Z.wu L.Xia Y.Xia D.Xiao Y.J.Xiao Z.J.Xiao Y.G.Xie Y.H.Xie X.A.Xiong Q.L.Xiu G.F.Xu J.J.Xu L.Xu Q.J.Xu Q.N.Xu X.P.Xu F.Yan L.Yan w.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang L.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang Z.Q.Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu J.S.Yu C.Z.Yuan Y.Yuan Y.Zeng B.X.Zhang B.Y.Zhang Institute of High Energy Physics G.I.Budker Institute of Nuclear Physics SB RAS(BINP) the Novosibirsk State university Helmholtz Institute Mainz Bochum Ruhr-university university of Turin INFN State Key Laboratory of Particle Detection and Electronics university of Science and {1. of china Southeast university Joint Institute for Nuclear Research INFN Laboratori Nazionali di Frascati Peking university Institute of Physics and technology Indiana university Bloomington Carnegie Mellon university Johannes Gutenberg university of Mainz INFN Sezione di Ferrara wuhan {1. Ankara university university of Chinese Academy of Sciences Istanbul Bilgi university the Moscow Institute of Physics and technology the Functional Electronics Laboratory Tomsk State University university of South{1. Nanjing university Shanghai Jiao Tong university Key Laboratory for Particle Physics Astrophysics and CosmologyMinistry of EducationShanghai Key Laboratory for Particle Physics and CosmologyInstitute of Nuclear and Particle Physics Liaoning university Nankai university Zhengzhou university Tsinghua university university of Ferrara university of Eastern Piedmont Central china Normal {1. university of Minnesota Minneapolis GSI Helmholtzcentre for Heavy Ion Research GmbH Guangxi university Nanjing Normal university KVI-CART University of Groningen Henan Normal university university of Hawaii Honolulu shandong {1. university of the Punjab university of Muenster Uppsala university Huangshan College university of Jinan Justus-Liebig-Universitaet Giessen II.Physikalisches Institut Istanbul Arel university Soochow university Beijing Institute of Petrochemical technology china Center of Advanced Science and {1. Sun Yat-Sen university Sichuan university Guangxi Normal university Indian Institute of technology Madras Shanxi university Henan university of Science and {1. Lanzhou university Zhejiang university Fudan university Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of

We study the hadronic decays of ∧c+ to the final states ∑+η and ∑+η’,using an e+e-annihilation data sample of 567 pb-1.taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCⅡ *** find evidence for the decays ∧c+→∑+η and ∑+η’ with statistical significance of 2.5σ and 3.2σ,*** to the reference decays ∧c+→∑+π0 and ∑+ω,we obtain the ratios of the branching fractions■and ■to be 0.35±0.1.±0.02 and 0.86±0.34±0.04,*** upper limits at the 90% confidence level are set to be■and■.Using BESIII measurements of the branching fractions of the reference decays,we determine B（∧c+→∑+η）=（0.41.0.1.±0.05）%（1.34±0.53 ±0.1.）%（1.9%）.Here,the first uncertainties are statistical and the second *** obtained branching fraction of ∧c+→∑+η is consistent with the previous measurement,and the branching fraction of ∧c+→∑+η’ is measured for the first time.

关键词： charmed baryon ∧c^+ decays branching fractions

Observation of e^+e^-→D_s^+■^((*)0)K^- and study of the P-wave D_s mesons

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第3期43卷 5-16页

作者： M.Ablikim M.N.Achasov S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang G.Chelkov G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen Y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.L.Dai J.P.Dai A.Dbeyssi D.Dedovich Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du J.Z.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.N.Gao Y.G.Gao Z.Gao B.Garillon I.Garzia A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov Z.Haddadi S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.Lange P.Larin L.Lavezzi H.Leithoff C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.L Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Y.Liu Kai Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.{1. J.D.{1. J.G.{1. Y.{1. Y.P.{1. C.L.{1.o M.X.{1.o P.W.{1.o T.{1.o X.L.{1.o S.{1.sso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min T.J.Min R.E.Mitchell X.H.Mo Y Institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Beijing Institute of Petrochemical technology Beijing 102617China Bochum Ruhr-university D-44780 BochumGermany Carnegie Mellon university PittsburghPennsylvania 15213USA Central china Normal {1. Wuhan 430079China china Center of Advanced Science and {1. Beijing 100190China COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university of Science and {1. Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenberg university of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou university Lanzhou 730000China Liaoning university Shenyang 110036China Nanjing Normal university Nanjing 210023China Nanjing university Nanjing 210093China Nankai university Tianjin 300071China Peking university Beijing 100871China shandong {1. Jinan 250100China Shanghai

Studies of e^+e~→D_s^+■^((*)0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb^(-1. collected with the BESIII detector at s^({1.)=4.600 GeV. The processes of e^+e^-→D_s^+■^(*0)K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by the modes D_s^+D_(s1.(2536)^-and D_s^+D_(s2)~*(2573)^-, respectively. The Born cross sections are measured to be σ~B(e^+e^-→D_s^+■^(*0)K^-) =(1..{1..3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(1..4±2.3± 1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σ~B(e^+e^-→D_s^+D_(s1.(2536)^-+c.c.)·B(D_(s1.(2536)^-→■^(*0)K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+D_(s2)~*(2573)^-+ c.c.)·B(D_(s2)~*(2573)^-→■~0 K^-)=(1..7 ± 2.9 ±2.0) pb. For the D_(s1.(2536)^-and D_(s2)~*(2573)^-mesons, the masses and widths are measured to be M(D_(s1.(2536)^-)=(2537.7±0.5 ±3.1. MeV/c2, Γ(D_(s1.(2536)^-) =(1.7 ±{1. ±0.6)MeV, and M(D_(s2)~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(D_(s2)~*(2573)^-)=(1..2 ±3.6 ±1.1. MeV. The spin-parity of the D_(s2)~*(2573)^-meson is determined to be J^p= 2^+. In addition, the processes e^+e^-→D_s^+■^((*)0)K^-are searched for using the data samples taken at four(two) center-of-mass energies between 4.41.(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined.

关键词： cross section P-wave D_s mesons resonance parameters spin-parity BESIII

Observation of e^(+)e^(-)→pppñπ-+c.c.

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2023年第4期47卷 16-25页

作者：麦迪娜 M.N.Achasov P.Adlarson M.Albrecht R.Aliberti A.Amoroso 安美儒安琪白旭红白羽 O.Bakina R.Baldini Ferroli I.Balossino 班勇 V.Batozskaya D.Becker K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.Calcaterra 曹国富曹宁 S.A.Cetin 常劲帆常万玲 G.Chelkov 陈琛陈超陈刚陈和生陈玛丽陈申见陈少敏 T.Chen 陈旭荣 X.T.Chen 陈元柏陈卓俊成伟帅初晓 G.Cibinetto F.Cossio 崔佳佳代洪亮代建平 A.Dbeyssi R.E.de Boer D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇董静董燎原董明义董翔杜书先 P.Egorov 范玉兰方建房双世方文兴方易 R.Farinelli L.Fava F.Feldbauer G.Felici 封常青冯俊华 K Fischer M.Fritsch C.Fritzsch 傅成栋高涵高原宁高扬 S.Garbolino I.Garzia 葛潘婷葛振武耿聪 E.M.Gersabeck A Gilman K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 谷立民顾旻皓顾运厅关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩婷婷韩文颖郝喜庆 F.A.Harris 何凯凯何康林 F.H.Heinsius C.H.Heinz 衡月昆 C.Herold M.Himmelreich 侯国一侯颖锐侯治龙胡海明 J.F.Hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄麟钦黄性涛黄燕萍黄震 T.Hussain N Hüsken W.Imoehl M.Irshad J.Jackson S.Jaeger S.Janchiv 纪全姬清平季晓斌季筱璐吉钰瑶贾泽坤姜侯兵姜赛赛江晓山 Y.Jiang 焦健斌焦铮金山金毅荆茂强 T.Johansson N.Kalantar-Nayestanaki 康晓珅 R.Kappert 柯百谦 I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leithoff M.Lellmann T.Lenz 李翠李聪李春花李澄李德民李飞李刚李慧李贺李海波李惠静 H.N.Li J.Q.Li 李静舒李井文李科 L.J.Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇梁昊梁浩梁浩梁勇飞梁羽铁廖广睿廖龙洲 J.Libby A.Limphirat 林创新林德旭 T.Lin 刘北江刘春秀 D.Liu 刘福虎刘芳刘峰 G.M.Liu H.Liu, 刘宏邦刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘露刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏 Z.H.lu 罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni 冒亚军毛泽普 S.Marcello 孟召霞 J.G.Messchendorp G.Mezzadri H.Miao 闵天觉 R.E.Mitchell 莫晓虎 N.Yu.Muchnoi Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛艳 S.L.Olsen 欧阳群 S.Pacetti 潘祥潘越 A.Pathak M.Pelizaeus 彭海平 K.Peters 平加伦平荣刚 S.Plura S.Pogodin V.Prasad 齐法制齐航漆红荣祁鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 K.H.Rashid C.F.Redmer 任旷洁 A.Rivetti V.Rodin M.Rolo 荣刚 Ch.Ros Institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Beijing Institute of Petrochemical technology Beijing 102617China Bochum Ruhr-university D-44780 BochumGermany Carnegie Mellon university PittsburghPennsylvania 15213USA Central china Normal {1. Wuhan 430079China Central South university Changsha 410083China china Center of Advanced Science and {1. Beijing 100190China COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university of Science and {1. Luoyang 471003China Henan university of {1. Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Perugia I-06100PerugiaItaly university of Perugia I-06100PerugiaItaly INFN Sezione di Ferrara I-44122FerraraItaly university of Ferrara I-44122FerraraItaly Institute of Modern Physics Lanzhou 730000China B Ulaanbaatar 13330Mongolia Jilin university Changchun 130012China Johannes Gutenberg university of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany Lanzhou university Lanzhou 730000China Liaoning Normal Unive

Using data taken at 29 center-of-mass energies between 4.1. and 4.70 GeV with the BESⅢdetector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 1..8 fb^(-1.,the process e^(+)e^(-)→pppñπ+*** observed for the first time with a statistical significance of 1..5σ.The average Born cross sections in the energy ranges of(4.1.0,4.380)GeV,(4.400,4.600)GeV and(4.61.,4.700)GeV are measured to be(21.5±5.7±{1.)fb,(46.3±1..6±2.5)fb and(59.0±9.4±3.2)fb,respectively,where the first uncertainties are statistical and the second are *** line shapes of the pñ and ppπ^(-)invariant mass spectra are consistent with phase space distributions,indicating that no hexaquark or di-baryon state is observed.

关键词： Multi-baryon channel hexaquark di-baryon states cross section measurement